Highly Efficient Syntheses of the Phytoalexin-Elicitor Active<b>β</b>-(1→3)-Branched<b>β</b>-(1→6)-Linked Heptaglucose and Its Dodecyl Glycoside
作者:Jun Ning、Yuetao Yi、Zhongxuan Zhou、Fanzuo Kong、Jianqiang Li
DOI:10.1055/s-2003-37644
日期:——
trichloroacetimidate through a regio- and stereoselective manner. The β-(1→3)-branched β-(1→6)-linked heptaglucose 1 and its dodecyl glycoside 2 having phytoalexin-elicitor activity were prepared using the developed strategy. Bioassays showed that the phytoalexin-elicitor activity of the dodecyl β-(1→3)-branched β-(1→6)-linked hexaglucoside 2 is slightly more than that of the corresponding reducing end free heptaglucose
采用 1,2:5,6-二-O-异亚丙基-α-D-呋喃葡萄糖、2,3,4,6-四O-苯甲酰基-α-D-吡喃葡萄糖基三氯乙酰亚胺酯和6-O-乙酰基-2,3,4-三-O-苯甲酰基-α-D-吡喃葡萄糖基三氯乙酰亚胺酯通过区域选择性和立体选择性方式进行。使用开发的策略制备了具有植物抗毒素诱导剂活性的β-(1→3)-支链β-(1→6)-连接的七葡萄糖1及其十二烷基糖苷2。生物测定表明,十二烷基 β-(1→3)-支链 β-(1→6)-连接的六葡萄糖苷 2 的植物抗毒素诱导剂活性略高于相应的还原端游离七葡萄糖 1。